diff --git a/docs/superpowers/evidence/i3blocks-automation-tutor-2026-10-10.json b/docs/superpowers/evidence/i3blocks-automation-tutor-2026-10-10.json
new file mode 100644
index 00000000..28ef5b35
--- /dev/null
+++ b/docs/superpowers/evidence/i3blocks-automation-tutor-2026-10-10.json
@@ -0,0 +1,31 @@
+{
+  "intent": "The i3 bar shows today's Automation tutor progress (tutor n/4), hides at 4/4, and a click opens the tutor via plc-lab's run.sh.",
+  "scope": [
+    "linux_configuration/i3blocks/automation_tutor.sh, the [automation_tutor] stanza in linux_configuration/i3blocks/config, linux_configuration/tests/test_i3blocks_automation_tutor.sh",
+    "Non-goal: no ledger HMAC check (earned_time owns that); display only"
+  ],
+  "changes": [
+    "New block counts kind==credit rows dated today in ~/.local/share/automation_tutor/ledger.json; hidden at 4/4; orange message when jq is missing or the ledger is unreadable",
+    "Click runs ~/src/plc-lab/run.sh (override AUTOMATION_TUTOR_RUN); ledger override AUTOMATION_TUTOR_LEDGER",
+    "Hermetic test with a stub run.sh and fixture ledgers: no ledger, 2 today + 1 yesterday, 4 today, unreadable, click"
+  ],
+  "verification": [
+    {
+      "command": "bash linux_configuration/tests/test_i3blocks_automation_tutor.sh",
+      "result": "pass",
+      "evidence": "automation_tutor block: all checks passed"
+    },
+    {
+      "command": "pre-commit run --files <changed-files>",
+      "result": "pass",
+      "evidence": "shellcheck, codespell, file caps and shell hooks passed"
+    }
+  ],
+  "risks": [
+    "i3blocks config is deployed by the installer; the block only appears after the next deploy to ~/.config/i3blocks"
+  ],
+  "rollback": [
+    "git revert the commit",
+    "Remove [automation_tutor] from ~/.config/i3blocks/config and reload i3blocks"
+  ]
+}
diff --git a/linux_configuration/i3blocks/automation_tutor.sh b/linux_configuration/i3blocks/automation_tutor.sh
new file mode 100755
index 00000000..d85e7d11
--- /dev/null
+++ b/linux_configuration/i3blocks/automation_tutor.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# ============================================================================
+# Automation tutor status for i3blocks: today's credited 15-minute blocks.
+#
+# A click runs plc-lab's run.sh, which starts the tutor if it is down and
+# opens it in the browser -- nobody has to remember the port. Hidden once all
+# four blocks are in: nothing left to earn, nothing to click.
+#
+# Counts the tutor ledger's credit rows dated today. It does not check their
+# HMAC (that needs the key and Python); earned_time does, so this is a
+# display, never the authority on what was paid.
+# ============================================================================
+
+set -euo pipefail
+
+readonly LEDGER="${AUTOMATION_TUTOR_LEDGER:-$HOME/.local/share/automation_tutor/ledger.json}"
+# i3blocks' PATH has no ~/src: absolute path.
+readonly RUN="${AUTOMATION_TUTOR_RUN:-$HOME/src/plc-lab/run.sh}"
+readonly TARGET=4
+
+readonly YELLOW='#F1FA8C'
+readonly ORANGE='#FFB86C'
+
+emit() {
+	# full_text, short_text, color — the three lines i3blocks reads.
+	printf '%s\n%s\n%s\n' "$1" "$2" "$3"
+}
+
+if [[ ${BLOCK_BUTTON:-0} -ne 0 ]]; then
+	setsid -f "$RUN" >/dev/null 2>&1 || true
+fi
+
+if ! command -v jq >/dev/null 2>&1; then
+	emit '⚙ tutor: no jq' '⚙ ?' "$ORANGE"
+	exit 0
+fi
+
+printf -v today '%(%Y-%m-%d)T' -1
+done_blocks=0
+# No ledger yet is a real zero: the tutor creates it on the first block.
+if [[ -e $LEDGER ]]; then
+	if ! done_blocks=$(jq --arg d "$today" \
+		'[.entries[] | select(.kind == "credit" and .day == $d)] | length' \
+		"$LEDGER" 2>/dev/null); then
+		emit '⚙ tutor: ledger unreadable' '⚙ ?' "$ORANGE"
+		exit 0
+	fi
+fi
+
+if ((done_blocks >= TARGET)); then
+	emit '' '' "$YELLOW"
+	exit 0
+fi
+emit "⚙ tutor ${done_blocks}/${TARGET}" "⚙ ${done_blocks}/${TARGET}" "$YELLOW"
diff --git a/linux_configuration/i3blocks/config b/linux_configuration/i3blocks/config
index aff265a4..322d5fef 100644
--- a/linux_configuration/i3blocks/config
+++ b/linux_configuration/i3blocks/config
@@ -63,6 +63,10 @@ interval=30
 command=~/.config/i3blocks/book_guard.sh
 interval=30
 
+[automation_tutor]
+command=~/.config/i3blocks/automation_tutor.sh
+interval=30
+
 [issue_dashboard]
 command=~/.config/i3blocks/issue_dashboard.sh
 interval=30
diff --git a/linux_configuration/tests/test_i3blocks_automation_tutor.sh b/linux_configuration/tests/test_i3blocks_automation_tutor.sh
new file mode 100755
index 00000000..36ff917c
--- /dev/null
+++ b/linux_configuration/tests/test_i3blocks_automation_tutor.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+# Behaviour tests for the i3blocks automation_tutor block: today's credit
+# count, the hidden 4/4 state, the unreadable-ledger warning and the click.
+# The ledger is a fixture and run.sh is a stub, so nothing reads the real
+# ledger and no tutor or browser is ever started.
+set -euo pipefail
+
+SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
+REPO_DIR=$(cd -- "$SCRIPT_DIR/.." && pwd)
+BLOCK="$REPO_DIR/i3blocks/automation_tutor.sh"
+TMP_DIR=$(mktemp -d)
+
+cleanup() {
+	rm -rf "$TMP_DIR"
+}
+trap cleanup EXIT
+
+fail() {
+	printf 'FAIL: %s\n' "$1" >&2
+	exit 1
+}
+
+assert_eq() {
+	local expected=$1
+	local actual=$2
+	local context=$3
+	if [[ "$expected" != "$actual" ]]; then
+		fail "$context (expected '$expected', actual '$actual')"
+	fi
+}
+
+printf '{}' | jq -e . >/dev/null 2>&1 ||
+	fail 'a working jq is required for the automation_tutor tests (pacman -S jq)'
+
+BIN_DIR="$TMP_DIR/bin"
+mkdir -p "$BIN_DIR"
+cat >"$BIN_DIR/run.sh" <<STUB
+#!/bin/bash
+echo clicked >>"$TMP_DIR/clicks"
+STUB
+chmod +x "$BIN_DIR/run.sh"
+
+LEDGER="$TMP_DIR/ledger.json"
+
+TODAY=$(date +%Y-%m-%d)
+YESTERDAY=$(date -d yesterday +%Y-%m-%d)
+
+# ledger <day:kind>...  (writes {"entries":[...]})
+ledger() {
+	local rows=()
+	local spec
+	for spec in "$@"; do
+		rows+=("$(jq -n --arg day "${spec%%:*}" --arg kind "${spec##*:}" \
+			'{day: $day, kind: $kind}')")
+	done
+	printf '%s\n' "${rows[@]}" | jq -s '{entries: .}' >"$LEDGER"
+}
+
+run_block() {
+	AUTOMATION_TUTOR_LEDGER="$LEDGER" AUTOMATION_TUTOR_RUN="$BIN_DIR/run.sh" \
+		bash "$BLOCK"
+}
+
+line() {
+	sed -n "${1}p" <<<"$2"
+}
+
+printf 'Checking automation_tutor block states...\n'
+
+rm -f "$LEDGER"
+out=$(run_block)
+assert_eq '⚙ tutor 0/4' "$(line 1 "$out")" 'no ledger is 0/4'
+assert_eq '⚙ 0/4' "$(line 2 "$out")" 'no ledger short text'
+assert_eq '#F1FA8C' "$(line 3 "$out")" 'progress is yellow'
+
+ledger "$TODAY:credit" "$TODAY:credit" "$YESTERDAY:credit"
+out=$(run_block)
+assert_eq '⚙ tutor 2/4' "$(line 1 "$out")" 'counts only today'
+assert_eq '⚙ 2/4' "$(line 2 "$out")" 'short text'
+
+ledger "$TODAY:credit" "$TODAY:debit"
+assert_eq '⚙ tutor 1/4' "$(line 1 "$(run_block)")" 'only credit rows count'
+
+ledger "$TODAY:credit" "$TODAY:credit" "$TODAY:credit" "$TODAY:credit"
+out=$(run_block)
+assert_eq '' "$(line 1 "$out")" '4/4 hides the block'
+assert_eq '' "$(line 2 "$out")" '4/4 short text hidden'
+
+printf 'Checking failure states are never blank or green...\n'
+
+printf '{' >"$LEDGER"
+out=$(run_block)
+assert_eq '⚙ tutor: ledger unreadable' "$(line 1 "$out")" 'unreadable text'
+assert_eq '#FFB86C' "$(line 3 "$out")" 'unreadable is orange'
+
+printf 'Checking a click runs run.sh...\n'
+
+ledger "$TODAY:credit"
+BLOCK_BUTTON=1 run_block >/dev/null
+for _ in 1 2 3 4 5 6 7 8 9 10; do
+	[[ -s "$TMP_DIR/clicks" ]] && break
+	sleep 0.1
+done
+assert_eq 'clicked' "$(cat "$TMP_DIR/clicks" 2>/dev/null)" 'click runs run.sh'
+
+printf 'automation_tutor block: all checks passed\n'